title: Element-specific magnetic hysteresis of individual 18 nm Fe nanocubes.
abstract: Correlating the electronic structure and magnetic response with the morphology and crystal structure of the same single ferromagnetic nanoparticle has been up to now an unresolved challenge. Here, we present measurements of the element-specific electronic structure and magnetic response as a function of magnetic field amplitude and orientation for chemically synthesized single Fe nanocubes with 18 nm edge length. Magnetic states and interactions of monomers, dimers, and trimers are analyzed by X-ray photoemission electron microscopy for different particle arrangements. The element-specific electronic structure can be probed and correlated with the changes of magnetic properties. This approach opens new possibilities for a deeper understanding of the collective response of magnetic nanohybrids in multifunctional materials and in nanomagnetic colloidal suspensions used in biomedical and engineering technologies.
authors.affiliation: Helmholtz Zentrum Berlin für Materialien und Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany.
authors.forename: Florian
authors.initials: F
authors.lastname: Kronast
authors.forename: Nina
authors.initials: N
authors.lastname: Friedenberger
authors.forename: Katharina
authors.initials: K
authors.lastname: Ollefs
authors.forename: Sebastian
authors.initials: S
authors.lastname: Gliga
authors.forename: Logane
authors.initials: L
authors.lastname: Tati-Bismaths
authors.forename: Ronja
authors.initials: R
authors.lastname: Thies
authors.forename: Andreas
authors.initials: A
authors.lastname: Ney
authors.forename: Ramona
authors.initials: R
authors.lastname: Weber
authors.forename: Christoph
authors.initials: C
authors.lastname: Hassel
authors.forename: Florian M
authors.initials: FM
authors.lastname: Römer
authors.forename: Anastasia V
authors.initials: AV
authors.lastname: Trunova
authors.forename: Christian
authors.initials: C
authors.lastname: Wirtz
authors.forename: Riccardo
authors.initials: R
authors.lastname: Hertel
authors.forename: Hermann A
authors.initials: HA
authors.lastname: Dürr
authors.forename: Michael
authors.initials: M
authors.lastname: Farle
mesh_terms: D017097:Electric Impedance; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size
chemical_list: D007501:Iron